181 lines
6.8 KiB
C
181 lines
6.8 KiB
C
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/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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MarlinSerial.h - Hardware serial library for Wiring
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Copyright (c) 2006 Nicholas Zambetti. All right reserved.
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Modified 28 September 2010 by Mark Sproul
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Modified 14 February 2016 by Andreas Hardtung (added tx buffer)
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*/
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#ifndef MARLINSERIAL_H
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#define MARLINSERIAL_H
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#include "MarlinConfig.h"
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#ifndef SERIAL_PORT
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#define SERIAL_PORT 0
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#endif
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// The presence of the UBRRH register is used to detect a UART.
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#define UART_PRESENT(port) ((port == 0 && (defined(UBRRH) || defined(UBRR0H))) || \
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(port == 1 && defined(UBRR1H)) || (port == 2 && defined(UBRR2H)) || \
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(port == 3 && defined(UBRR3H)))
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// These are macros to build serial port register names for the selected SERIAL_PORT (C preprocessor
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// requires two levels of indirection to expand macro values properly)
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#define SERIAL_REGNAME(registerbase,number,suffix) SERIAL_REGNAME_INTERNAL(registerbase,number,suffix)
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#if SERIAL_PORT == 0 && (!defined(UBRR0H) || !defined(UDR0)) // use un-numbered registers if necessary
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#define SERIAL_REGNAME_INTERNAL(registerbase,number,suffix) registerbase##suffix
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#else
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#define SERIAL_REGNAME_INTERNAL(registerbase,number,suffix) registerbase##number##suffix
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#endif
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// Registers used by MarlinSerial class (expanded depending on selected serial port)
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#define M_UCSRxA SERIAL_REGNAME(UCSR,SERIAL_PORT,A) // defines M_UCSRxA to be UCSRnA where n is the serial port number
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#define M_UCSRxB SERIAL_REGNAME(UCSR,SERIAL_PORT,B)
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#define M_RXENx SERIAL_REGNAME(RXEN,SERIAL_PORT,)
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#define M_TXENx SERIAL_REGNAME(TXEN,SERIAL_PORT,)
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#define M_TXCx SERIAL_REGNAME(TXC,SERIAL_PORT,)
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#define M_RXCIEx SERIAL_REGNAME(RXCIE,SERIAL_PORT,)
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#define M_UDREx SERIAL_REGNAME(UDRE,SERIAL_PORT,)
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#define M_UDRIEx SERIAL_REGNAME(UDRIE,SERIAL_PORT,)
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#define M_UDRx SERIAL_REGNAME(UDR,SERIAL_PORT,)
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#define M_UBRRxH SERIAL_REGNAME(UBRR,SERIAL_PORT,H)
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#define M_UBRRxL SERIAL_REGNAME(UBRR,SERIAL_PORT,L)
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#define M_RXCx SERIAL_REGNAME(RXC,SERIAL_PORT,)
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#define M_USARTx_RX_vect SERIAL_REGNAME(USART,SERIAL_PORT,_RX_vect)
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#define M_U2Xx SERIAL_REGNAME(U2X,SERIAL_PORT,)
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#define M_USARTx_UDRE_vect SERIAL_REGNAME(USART,SERIAL_PORT,_UDRE_vect)
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#define DEC 10
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#define HEX 16
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#define OCT 8
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#define BIN 2
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#define BYTE 0
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#ifndef USBCON
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// Define constants and variables for buffering incoming serial data. We're
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// using a ring buffer (I think), in which rx_buffer_head is the index of the
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// location to which to write the next incoming character and rx_buffer_tail
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// is the index of the location from which to read.
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// 256 is the max limit due to uint8_t head and tail. Use only powers of 2. (...,16,32,64,128,256)
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#ifndef RX_BUFFER_SIZE
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#define RX_BUFFER_SIZE 128
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#endif
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#ifndef TX_BUFFER_SIZE
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#define TX_BUFFER_SIZE 32
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#endif
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#if ENABLED(SERIAL_XON_XOFF) && RX_BUFFER_SIZE < 1024
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#error "XON/XOFF requires RX_BUFFER_SIZE >= 1024 for reliable transfers without drops."
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#endif
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#if !IS_POWER_OF_2(RX_BUFFER_SIZE) || RX_BUFFER_SIZE < 2
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#error "RX_BUFFER_SIZE must be a power of 2 greater than 1."
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#endif
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#if TX_BUFFER_SIZE && (TX_BUFFER_SIZE < 2 || TX_BUFFER_SIZE > 256 || !IS_POWER_OF_2(TX_BUFFER_SIZE))
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#error "TX_BUFFER_SIZE must be 0 or a power of 2 greater than 1."
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#endif
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#if RX_BUFFER_SIZE > 256
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typedef uint16_t ring_buffer_pos_t;
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#else
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typedef uint8_t ring_buffer_pos_t;
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#endif
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#if ENABLED(SERIAL_STATS_DROPPED_RX)
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extern uint8_t rx_dropped_bytes;
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#endif
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#if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
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extern ring_buffer_pos_t rx_max_enqueued;
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#endif
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class MarlinSerial { //: public Stream
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public:
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MarlinSerial() {};
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static void begin(const long);
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static void end();
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static int peek(void);
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static int read(void);
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static void flush(void);
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static ring_buffer_pos_t available(void);
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static void checkRx(void);
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static void write(const uint8_t c);
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#if TX_BUFFER_SIZE > 0
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static uint8_t availableForWrite(void);
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static void flushTX(void);
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#endif
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static void writeNoHandshake(const uint8_t c);
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#if ENABLED(SERIAL_STATS_DROPPED_RX)
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FORCE_INLINE static uint32_t dropped() { return rx_dropped_bytes; }
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#endif
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#if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
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FORCE_INLINE static ring_buffer_pos_t rxMaxEnqueued() { return rx_max_enqueued; }
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#endif
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private:
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static void printNumber(unsigned long, const uint8_t);
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static void printFloat(double, uint8_t);
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public:
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static FORCE_INLINE void write(const char* str) { while (*str) write(*str++); }
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static FORCE_INLINE void write(const uint8_t* buffer, size_t size) { while (size--) write(*buffer++); }
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static FORCE_INLINE void print(const String& s) { for (int i = 0; i < (int)s.length(); i++) write(s[i]); }
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static FORCE_INLINE void print(const char* str) { write(str); }
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static void print(char, int = BYTE);
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static void print(unsigned char, int = BYTE);
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static void print(int, int = DEC);
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static void print(unsigned int, int = DEC);
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static void print(long, int = DEC);
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static void print(unsigned long, int = DEC);
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static void print(double, int = 2);
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static void println(const String& s);
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static void println(const char[]);
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static void println(char, int = BYTE);
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static void println(unsigned char, int = BYTE);
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static void println(int, int = DEC);
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static void println(unsigned int, int = DEC);
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static void println(long, int = DEC);
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static void println(unsigned long, int = DEC);
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static void println(double, int = 2);
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static void println(void);
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};
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extern MarlinSerial customizedSerial;
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#endif // !USBCON
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// Use the UART for Bluetooth in AT90USB configurations
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#if defined(USBCON) && ENABLED(BLUETOOTH)
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extern HardwareSerial bluetoothSerial;
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#endif
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#endif // MARLINSERIAL_H
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